Tungsten trioxide film photoanodes prepared by aerosol pyrolysis for photoelectrochemical applications

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43925581" target="_blank" >RIV/60461373:22310/23:43925581 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0920586122004862?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0920586122004862?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cattod.2022.12.012" target="_blank" >10.1016/j.cattod.2022.12.012</a>

Result language
angličtina
Original language name
Tungsten trioxide film photoanodes prepared by aerosol pyrolysis for photoelectrochemical applications
Original language description
The present work describes the preparation of tungsten trioxide photoanodes by aerosol pyrolysis on FTO/glass substrates. WO3 layers were characterised by profilometry, XRD, SEM and photoelectrochemistry (linear voltammetry and chronoamperometry under illumination). Optimal deposition conditions to obtain a relatively thick layer were found to be: 11 mm nozzle diameter, 2.5 cm nozzle to substrate distance, and 105 cm/s airflow velocity. A deposition temperature of at least 450 °C was necessary to obtain γ-monoclinic WO3. The as-deposited layers had loose particles on the surface; however, these particles could be removed by scotch tape with no influence on the roughness and photoactivity of the layer. The highest photocurrent was achieved by annealing the layers at 450 °C; however, such layers were not photoelectrochemically stable. To obtain superior long-term stability, an annealing temperature of 550 °C was necessary. The highest, stable photocurrent of ∼ 990 μA/cm2 (E = 0.9 V vs. Ag/AgCl, 1 sun) was achieved for a layer thickness of 3.8 µm.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project
<a href="/en/project/GA20-11635S" target="_blank" >GA20-11635S: Advanced oxide based semiconductor photoelectrodes for solar energy conversion and water treatment</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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